Method of manufacturing a display window for a cathode ray tube.

摘要

The inner surface of a cathode ray tube is roughened by blasting the surface with a suspension which comprises radiation particles, the inner surface being irradiated in such a manner that it satisfies the inequalities 0.05 mu m < Ra < 0.5 mu m and Rz < 4 mu m and, preferably, 0.1 mu m < Ra < 0.2 mu m. The reflection at such a surface is comparable to the reflection at an etched surface. The method in accordance with the invention is safer and less harmful to the environment.